Expansion-bolt.



No. 69l,92|. Patented Jan. 28, 1902.

5-. WHEELER.

EXPANSION BOLT. (Application filed Mar; 30, 1901..)

WITNESSES; v I INVENTOR lam M; 5 W E; amp- WWW w ATTORNEY zen of the Unified Eieiee of they beingcleteclled or eleeve or member will subsi-anfiielly which tlr'esaicl member is arraeged' to engage throughout its entire lengthprovided Witha n expensible device,whereby the seidsleeve orexpensibie member-may be uniformly througlloui; its leogth, such pending device beingeontained gholly wir-l1 EI-Te, m reel SETH E l HER ER,' 6F ALBANY, NEW YORK.

N 89 LT.

eeeelrzee 1oz? age of meters Pafieni m. 693,921, dated January 2a, 1902.

Applioecion filed March 30, 1901. Serial No. 53,693, (No model.)

To @515 whom 1 1$ 'srmy'eoiwarn:

Bell; known time l EET'E WHEELER, a eiti- America, a, reeicle'niz o f Albany, i2). 'ilie oou'ntyof Albany, State of, New York, have invented. eertein vnew anfiiaisei'el Improvements, in Expansion- Bel'ts 'ef which ellefoilewieg ie specificat-ienr Myievemien rele'eeet-o bolts, and periiou as expem larly is. ilxei-olese of bolts, keowzz The objeoe elf myieventioiiie to provide e simpl eferme? expensiee oolfiie'whieli the to be expended may be made or formed of eeingle integral oieoeand fii: engage; theorifioe in and which is expended eencen'trieelly and subetanthlly in the said sleeve. I 4 To this end my invention censists in certain clesails of construction and cembinaiion of partsQes will h'ereinefterbe more fully see fort-hi i I will describe a, bolt embodying my invenfiioo and. then point out the novel fee-- tures thereof inoleimsi r In the eeoompanying drawings, Figure 1 is a, View of e eoi omboclying my invention. Fig. 2 is a, iew showing the different parts comprised in the belt of 1 detached or separated, Fig. 3 e viewshowing a modiw fied form of sleeve and expander; thetwo parts being separated or detached. Fig. is a, View of further modification. Fig. 5 ie a View of the several parts of the bolt of Big. L, eeparetefii. Eigz 6 is a View of afurther modifioetion and ofseveml of the parts detached.-

- and C the expanding device for the sleeve.

The bolt A may be oi any eonstruebion, Ii; preferably comprises a screw-threaded portion amnwhieh the expanding device (3 ,The sleeve B is a, Spur, O1e-hal3iS, it is proviiled wit-ha, longitudinal our amending from one end to the other of the sleeve. The

works, em? faoetsa or aheed, by means ef .Whieh thev bolt is termed; I

edges?) of thi s vcut may taper orbs inclined;

relatively to the longitudinal; axis of the sleeve from one eml of the sleeve B ,to the other, as shown in Fige 1 and 2, or one edge elem-7:1 in Fig, 3.

a, interiorly sorew-threeded, and a wedge' c',

of the sleeve 13. in Figs. land 2 the edges 0 0f the wedge 12 are both inclined to boili'orm to the repel" or inclination of b of the sleeve B, while in Fig. 3

the edges one edge I) may be straight, with the other inclined, as

of the Wedge is straight to, conform to'rhef straight edge 5 I v v 1 Referring now to Figs. 4 and 5 the bolt: 'A is shown as; having two sorew threaded poriione, the additional or second iaion eeieg; indioated. by o The two screw: threaded gir'oions' are opposite-that is, one

is a, right eiireavjl arid the other a left; threed.

0n eeeh' threaded portion a, era-da an expending clevioe G Works.

tlireadenl per The sleeve B- hi this isisteri-ee is also @EQVliiBd with-e lengfi todieei euL extending; from: end to end, the] erlgee of whieh'are oypositely taperedl In e'ateadi of having both edges taper, as shown,

nlae form of eu'tgillusisratedin Fig. Sway be 4 In'eithe'rease the Wedges c of tl e iwe expandixzg devieeswi'll befermefi $50 00am with the edges of the 1on3 v The operation of the device will be readily provifiecl eveeoh eml gitudinal om.

'unclerstooci. The bolt is first, inserted through the ebjeet to he secured in position end'then late the eleeve and exgsamling devise, The belt, with time sleeve and expanding device,- is

because the sleeve is prevented from moving longitudinally by its hearing against the obplaee it; is expanded by' then insertegi into the opening in which the bolt is tube Secured. The bolt is then rotated, and

ml (2 air. exending from end to end of the sleeve the sleeve will be expanded ooocentricallm carried by l ke coll-aria. The wedge deg-:1- .gageo with the'edges of the longitudinal out":

upon the inner surface of the sleeve instead the effect of which is to bind it more securely to the wall of the opening or cavity. There is also less liability in a concentric expansion of fracturing the edge of the opening when the opening is formed in brittle or porous substances.

In Fig. 6 the longitudinal opening in the sleeve is straight instead of tapered. The sleeve is formed with a conical inner surface, and the expanding device is conical in form to fit the inner surface of the sleeve and has a rib f, which runs in the slot of the sleeve and prevents the expanding device from turning. in this form the expanding device acts of uponthe edge of the slot to expand it concentrically when the bolt is rotated.

'What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination with a bolt, of a sleeve formed in one piece and having a single longitudinal cut from end to end through the wall thereof, said sleeve surrounding said bolt; together with an expanding device contained wholly within the said sleeve, and coacting with same to produce a concentric expansion, substantially uniform throughout the length thereof.

2. The combination with a bolt, of asleeve formed in one piece and having a single longitudinal cut from end to end through the wall thereof, said sleeve surrounding said bolt; together with an expanding device engaging the longitudinal edges of the cut in the sleeve, for expanding the sleeve concentrically,and substantially uniformly,throughout its length.

3. The combination with a bolt, of a sleeve formed in one piece and having a single Ion gitudinal cut from end toend through the 40' Wall thereof, an edge of said out being inclined relatively to the longitudinal axis of the sleeve, said sleeve surrounding said bolt; togetherwith an expanding device working on the bolt and engaged with said inclined edge, whereby the sleeve is expanded concentrically,and substan tially uniforml y, thrpu ghout its length.

4c. The combination of a bolth'aving oppositely-threaded portions, a split sleeve sur- 5o rounding the bolt and split from end to end, and havinga plurality of inclined portions in the longitudinal edges of the sleeve,and a pair of expanding devices working on'said screw-threaded portions of the bolt and en-' gaging with said inclined portions, whereby the bolt is expanded concentrically.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

SETH ,VHEELER,

Witnesses C. F. CARRINGTON, EDW. BJHAWKINS. 

